﻿#include<iostream>
using namespace std;
int main() {
	int a{ -10 };
	unsigned int b{ 2 };
	a = a++ + 2;
	cout << a << endl;
	cout << typeid(a).name() << endl;
	cout << typeid(b).name() << endl;
	cout << typeid(a + b).name() << endl;


}

//有符号和无符号相加减得到的结果是无符号